Make slickgrid testing more verbose
Separate page http-status test to own function
Move pagetitle test to separate function
Give name for the function that tests existance of grid-variable
Add test to check that column-variable is not null
Update CasperJs to use start instead of browse
Add test to check if column count is correct
Make columnCount variable constant

	Added new correctColumnCount variable that is used to check if
	grid has correct amount of columns and made it constant so that
	future changes to column count can be easily applied to tests.
Remove unnecessary variable.
Add test to verify that grid has correct columns
Merge branch 'addTestForColumns' into dev